Istanbul -LRB- CNN -RRB- -- Thousands of mourners gathered Thursday for the second mass funeral in two days after a 22-year-old Turkish man died from a gunshot wound .

Crowds carrying Turkish flags escorted the coffin of Burak Can Karamanoglu through the streets of Istanbul . His death Wednesday increased tensions in a country riven by deep political polarization in the run-up to municipal elections scheduled to take place nationwide on March 30 .

The Istanbul governor 's office issued a statement explaining that Wednesday night , Karamanoglu `` lost his life as a result of a verbal argument between two groups that escalated into a fight where a gun was used . ''

Two other men received gunshot wounds , the governor 's office said . Neither of the wounded was in critical condition .

It is not clear which groups were involved in the fight that led to Karamanoglu 's death . But the violence took place amid clashes in nearby streets between riot police and mourners who had attended the funeral of 15-year-old Berkin Elvan on Wednesday .

Berkin died in an Istanbul hospital this week , nine months after he was critically wounded , apparently by a tear gas canister fired by riot police .

The boy 's death triggered a massive outpouring of grief and discontent , as demonstrators in several Turkish cities blamed the death on the Turkish government and excessive police force .

After burying his son , Berkin 's father took to the airwaves to denounce Turkish Prime Minister Recep Tayyip Erdogan .

`` I am addressing the Prime Minister . If he wants , he could bring the murderer of my child to me in one hour , '' Sami Elvan told CNN sister network CNN Turk .

He went on to criticize Erdogan for refusing to discuss the death of his son or of six Turkish men who have died since anti-government protests erupted in May 2013 .

In a worrying sign of growing political tension , the father of Karamanoglu -- this week 's gunshot victim -- lashed out at the crowds of mourners who clashed with police after Berkin 's funeral .

`` There was n't a place , a storefront they did n't damage . They burned and destroyed everything , '' said Halil Karamanoglu , in comments published by the state broadcaster TRT .

`` I am hurting right now . Take pity on this nation , take pity on these children . Common sense ... we have to be united , '' he said .

Turkey 's Prime Minister has not discussed Berkin 's death in lengthy television interviews and at daily political rallies .

But at a public appearance Thursday , Erdogan drew attention to Karamanoglu 's shooting death . He blamed the killing on the protesters who criticize his government .

`` Yesterday , unfortunately , they killed a youth that had just returned from military service . What are the people expressing sorrow yesterday going to say about this child of ours ? '' Erdogan said , according to the semiofficial Anadolu news agency .

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The death of Burak Can Karamanoglu follows Tuesday death of Berkin Elvan , 15

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It is not clear which groups were involved in a fight that led to Karamanoglu 's death

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Berkin died nine months after he was wounded , apparently by a police tear gas canister

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Berkin 's father lashes out at Turkey 's PM ; Karamanoglu 's father criticizes boy 's mourners